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06/06/09 1:00 AM ET

Jackson, Petit have scare in rehab BP

Arizona (24-31) at San Diego (25-29), 7:05 p.m. MST

SAN DIEGO -- This just hasn't been Conor Jackson's year.

First, the D-backs outfielder struggled at the plate during the spring and at beginning of the season. Then he came down with valley fever, a debilitating illness that landed him on the disabled list for an indefinite period.

Friday afternoon before the opening game of a four-game set with the Padres, Jackson took live batting practice against Yusmeiro Petit, who is working his way back from shoulder problems.

Jackson connected with one of Petit's offerings and lined it right back up the middle and off Petit's right foot. Petit was not injured, but it caused several anxious moments, especially from Jackson who walked over to the dugout to make sure Petit was OK.

"Unbelievable," Jackson said. "That's the way my season has gone."

Jackson was extremely fatigued after the session as he tries to regain his strength and endurance, and it still seems he is quite a ways away from being ready to play.

Petit, meanwhile, said he will start a rehab assignment on Monday for Triple-A Reno.

Pitching matchup
ARI: RHP Max Scherzer (2-4, 4.47 ERA)
Scherzer had the worst outing of his Major League career against the Braves on Sunday at Chase Field. The right-hander missed with his location, particularly against left-handed hitters, and Atlanta punished him for it. Scherzer gave up a career-high eight runs on 10 hits while lasting just 3 2/3 innings. Three batters into the game, the Braves led, 2-0, and a two-run homer by Chipper Jones in the third added to the woes. Garret Anderson's three-run shot in the fourth capped Scherzer's day. Prior to that start, Scherzer had won two of his previous three starts after going 22 games and 13 starts before getting his first big league win.

SD: RHP Kevin Correia (1-4, 5.37 ERA)
Correia was victimized by the hard-hitting Phillies in his last start, allowing a season-high 10 hits and four runs (two home runs) in a loss at PETCO Park. Correia, who had allowed five home runs in his previous nine starts, allowed a solo shot to Chase Utley and another solo shot to Ryan Howard, a bomb that sailed well over the wall in center field. Correia mixed in some nice curveballs, striking out Howard twice, but the Phillies were able to get on top of his fastball more often than not. After a stretch of three good starts, Correia has now allowed 10 earned runs in his past two starts.

Billy Buckner was available for an inning out of the bullpen on Friday, but is now preparing for his start against the Giants on Tuesday. ... D-backs manager A.J. Hinch said Josh Whitesell would get a long look at first, but he was out of the lineup Friday so Augie Ojeda could get the start at third. Hinch said it was important to keep everyone in the roster in the flow of things. "Whitey is going to get plenty of at-bats," Hinch said. ... First baseman Tony Clark, who is on the DL with a right hand injury, was one of those to take swings against Petit on Friday. Clark could be ready to start a rehab assignment when the team returns home on Tuesday. It's likely he will need quite a few at-bats since he has been out for so long.

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Up next
• Sunday: D-backs (Dan Haren, 4-4, 2.42) at Padres (Josh Geer, 1-1, 5.44), 1:05 p.m. MST
• Monday: D-backs (Jon Garland, 4-5, 5.34) at Padres (Jake Peavy, 5-6, 4.10), 7:05 p.m. MST
• Tuesday: D-backs (Billy Buckner, 2-1, 5.24) vs. Giants (TBD), 6:40 p.m. MST

Steve Gilbert is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.